读取{"y":115.9059900,"x":29.1660300,"label":0}格式的json数据,leaflet画出轨迹聚类
时间: 2023-09-15 20:18:25 浏览: 52
以下是一个简单的示例代码,可以读取给定的json数据,将其转换为Leaflet可识别的格式,然后用不同的颜色绘制出聚类后的轨迹。
```html
<!DOCTYPE html>
<html>
<head>
<title>Leaflet Clustering Demo</title>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="https://cdn.jsdelivr.net/leaflet/1.3.4/leaflet.css" />
<script src="https://cdn.jsdelivr.net/leaflet/1.3.4/leaflet.js"></script>
<script src="https://cdn.jsdelivr.net/leaflet.markercluster/1.4.1/leaflet.markercluster.js"></script>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/leaflet.markercluster/1.4.1/MarkerCluster.css" />
<link rel="stylesheet" href="https://cdn.jsdelivr.net/leaflet.markercluster/1.4.1/MarkerCluster.Default.css" />
<style>
#mapid { height: 500px; }
</style>
</head>
<body>
<div id="mapid"></div>
<script>
var map = L.map('mapid').setView([29.1660300, 115.9059900], 13);
L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
maxZoom: 18,
attribution: 'Map data © <a href="https://www.openstreetmap.org/">OpenStreetMap</a> contributors, ' +
'<a href="https://creativecommons.org/licenses/by-sa/2.0/">CC-BY-SA</a>, ' +
'Imagery © <a href="https://www.mapbox.com/">Mapbox</a>',
id: 'mapbox.streets'
}).addTo(map);
var markers = L.markerClusterGroup();
// Replace this with your own JSON data
var json_data = [{"y":115.9059900,"x":29.1660300,"label":0},
{"y":115.9059900,"x":29.1660302,"label":0},
{"y":115.9059900,"x":29.1660304,"label":0},
{"y":115.9059901,"x":29.1660306,"label":1},
{"y":115.9059902,"x":29.1660308,"label":1},
{"y":115.9059903,"x":29.1660310,"label":1},
{"y":115.9059904,"x":29.1660312,"label":2},
{"y":115.9059905,"x":29.1660314,"label":2},
{"y":115.9059906,"x":29.1660316,"label":2},
{"y":115.9059907,"x":29.1660318,"label":3},
{"y":115.9059908,"x":29.1660320,"label":3},
{"y":115.9059909,"x":29.1660322,"label":3}];
var colors = ["red", "green", "blue", "purple"];
for (var i = 0; i < json_data.length; i++) {
var latlng = [json_data[i].x, json_data[i].y];
var label = json_data[i].label;
var marker = L.circleMarker(latlng, {
color: colors[label],
fillOpacity: 0.6,
radius: 5
});
markers.addLayer(marker);
}
map.addLayer(markers);
</script>
</body>
</html>
```
在这个示例中,我们首先创建了一个地图对象,然后添加了一个OpenStreetMap图层来显示地图。接下来,我们创建了一个markerClusterGroup对象,用于聚合所有标记。然后,我们读取了一个示例JSON数据,该数据包含了一些点的位置和标签信息,每个标签对应一种颜色。我们使用一个循环遍历所有点,并将它们转换为圆形标记,然后根据对应的标签选择不同的颜色。最后,我们将所有标记添加到markerClusterGroup中,并将其添加到地图上。
这个示例只是一个简单的演示,仅供参考。如果您需要更复杂的轨迹聚类功能,可能需要使用其他库或自己实现算法。